234631220 has 48 divisors (see below), whose sum is σ = 509013120. Its totient is φ = 90792576.

The previous prime is 234631217. The next prime is 234631223. The reversal of 234631220 is 22136432.

234631220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (234631217) and next prime (234631223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234631223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92489 + ... + 94991.

It is an arithmetic number, because the mean of its divisors is an integer number (10604440).

Almost surely, 2^234631220 is an apocalyptic number.

234631220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 234631220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254506560).

234631220 is an abundant number, since it is smaller than the sum of its proper divisors (274381900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

234631220 is a wasteful number, since it uses less digits than its factorization.

234631220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664 (or 2662 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 234631220 is about 15317.6767167870. The cubic root of 234631220 is about 616.7776097771. Note that the first 3 decimals are identical.

Adding to 234631220 its reverse (22136432), we get a palindrome (256767652).

The spelling of 234631220 in words is "two hundred thirty-four million, six hundred thirty-one thousand, two hundred twenty".